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@met )hline GILMAN K. WINGHESTER, 0F PROVIDENCE, RHODE ISLAND.

Zelte/rs Patent-N0. 105,022, dated July 5, 1870.

v STOP-MOTION SPRING FOR BRAIDINGMACHINES.

The Schedule referred to in these Letters Patent and making part of thesame.

To all whom it may concern.-

Be it known that I, GILMAN K. WINCHESTER, of Providence, in the countyof Providence and State of Rhode Island, have invented an ImprovedStop-motion Spring for Braiding-Machines; and I do hereby declare thatthe following is a full and exact description, reference being had tothe accompanying drawing making a part ot' this specilication.

The nature of my invention consists of a combined double-fulcrumed leverand spring, by means of which the stop-motion, when turned upon itscenter, on the breaking of a strand, is thrown back to its proper placeof' rest exactly.

To enable those skilled in the art to make and use my invent-ion, I givethe following description of its construction and operation.

Figure l represents the stop-motion spring with its lever, together withthe frame bywhich it is attached to the machine.

Figure 2 represents the frame alone, showing the bearings of the springand lever.'

Figure 3 represents the bottom View of a braidingmachine with thestop-motion spring attached thereto at a a'.

Figure 4 represents a section of the stop-motion rim, there being threesections in each rim.

Fignre' represents a side view ofthe front part of the body of abraiding-machine with three ot the carriers and bobbius pertainingthereto, the gears that propel the carriers being between the plates r rand t t, hidden from sight by a baud that surrounds the machine.

The weights yy y, upon the carriers u' u' w, are suspended by thestrands z z i..

NVhen the machine is 'in operation, and a strand breaks, the weightslides tothe bottom ot' the carrierpost, aud the flange ot' the weightstrikes one of the points on the inside of the stop-motiouri'm, turningthe rim on its center, thus depriving the shipper u u u of its supportat cr, letting it fall and stopping the machine.

The outer end of the lever c being made to follow the movement of thestop-motion, by means of the arm L passing tln'ough the slot at h h, thespring b becomes compressed, throwing the stop-motion back as soon asthe fallen weight passes the point which it struck.

By means of the lever c being provided with two fulcrums, thestop-motion is brought back t-o the exact point required, and therein.is the advantage of this spring. Those hcretoforein use onbraiding-machines being straight strips of steel, fastened rigidly atone end, their action was such as to bringthe stop motion back to apointnear that desired, but not always to the exact point.

The use of the straight spring is also attended with much more`breakage,-both of springs and the weights as they come in collision withthe` stop-motion, the straight springs being less pliable than myimproved spring.

In iig. 3, the shipper u u u, seen in tig. 5, is left out, in order toshow more fully the spring-lever c, and the stop-motion arm k.

Figure is a side view., and

Figure 7 is va front View of the weight y that slides on the post of thecarrier w w.

`Vheu the strand by which it is suspended breaks, this Weight falls tothe foot of the carrier-post, and the tiange y' strikes one of thepoints on the inside ot' the stop-motion rim, throwing the stop-motionfar enough to drop the shipper and stop the machine4 These weights arestr-constructed that they may be used with either end uppermost.

Figure 8 represents the' spring heretofore more commonly in use.

The frame a is fastened to the machine as in iig. 5.

The straight spring cl .is fastened at c2 to a part ot' the frame, whileits other end passes loosely through a slot in the stop-motion arm at k.

The rigidity of the spring c, at c2, is the power that brings thestop-motion back, approximately, to its proper place of rest, whenthrown therefrom by the action ofthe machine.

,'iVhat I claim as my invention, and desire to secure by Letters Patent,is

A double-fulcrumed lever, combined with a spring,

in such a manner that the fulcrums-of the lever shall be on' each sideof the point where the spring makes connection with the lever, allcombined with the stopmotion ot' a braiding-machine, in such a manner asto always bring the stop-motion back to the same center or place ot'rest after being thrown therefrom. Y GILMAN K. XVIN CHESTER.

Witnesses:

BENJAMIN B. Emmaus, ARNOLD Hoon.

